These golden-green hummingbirds inhabit wet grasslands, dry shrubby savannas, pastures, and roadsides. They tend to favor areas near water. Both males and females display a white streak above and below the eye, and have a white-tipped tail. White-tailed Goldenthroats forage by themselves at low levels, making an incessant, loud spit call as they go. They feed from scattered flowers or glean insects and spiders from vegetation.